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Why voltage in transformer suddenly increases and then decreases suddenly?
Wiki User
∙ 11y ago
In perfect condition, the voltage variations does not occur..
Due to failure causes, voltage variations will arise
Wiki User
∙ 11y ago
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An electrical tool that increases or decreases the voltage in an electrical current is?
capacitors
What is used to increase or decrease the voltage across a power line?
The device that increases or decreases the voltage impressed across a power line is known as a voltage regulator. A voltage regulator is a type of transformer where the primary and secondary turns ratio are fairly close; one (primary or secondary) often has a tap changing ability to add or remove several windings, allowing more dynamic control of voltage.
Why secondary terminal voltage decreases with increase in load?
An increase in load (equivalent to a decrease in resistance*) causes an increase in load current. This increases the internal voltage drop within the transformer, and the terminal voltage reduces accordingly.[*An increase in load means more current is being drawn by that load, so an increase in load is equivalent to a decrease in load resistance]
What happens to voltage when resistance increases?
Ohm's law states that "The current is directly proportional to the applied EMF (voltage) and inversely proportional to the resistance in the circuit." <<>> if resistor exists, resistance decreases according to ohm's law, current is directly proportional to voltage and current is inversely proportional to resistance it means as current increases, voltage increases. resistance increases, current decreases so as voltage if there is no resistor, there should be no resistance except internal resistance of voltmeter and ammeter
What is the name of the transformer that reduces the voltage?
a step down transformer is used to lower the voltage from the powerlines into your home. a common slang term for this type of transformer is a pole pig.
A devise that increases or decreases the voltage of alternating current?
TRANSFORMER
What do you call A device that increases or decreases voltage in a power line is a?
A transformer can perform this function.
What is a transformer that increases voltage?
A transformer that increases voltage is a step-up transformer.
What is a transformer called that increases voltage?
A transformer that increases voltage is a step-up transformer.
What device increases or decreases the volt- age of alternating current?
A transformer can step up or step down AC voltage
What type of transformer decreases the voltage produced by the source.?
step-down transformer
What is a device that increase or decreases voltage in a power line?
A transformer. A small example is the coil in a motorcar. A transformer, in a power line, only changes voltage in one direction under normal usage. At distribution voltages, about 8360 VAC, the voltage is monitored by a regulator. A regulator either increases or decreases the voltage automatically to insure the desired voltage is steady. This regulated voltage is then fed to Transformers to provide customers with a regulated voltage at the desired voltage.
Why during loading the voltage get decreased at output?
Output voltage (...of a transformer, for example...) will decrease as it is loaded because of the transformer's internal resistance. As output current increases/load resistance decreases, a larger voltage will be dropped across the internal transformer resistance. This same phenomenon is present in AC and DC systems (such as batteries).
What device increases voltage?
a step-up transformer
What is the main purpose of a transformer?
step up transformer output gives the high voltage which is useful for transmiission of electricity
What is step up and step down?
Usually refers to a transformer. A step up transformer increases the voltage and a step down decreases the voltage by an amount proportional to the ratio of the windings between Primary and Secondary. A 1:2 ratio is a step up and doubles the voltage. A 2:1 would be a step down and halve the voltage.
A device that decreases voltage?
Step down transformer, potentiometer or rheostats can all be used to reduce voltage.
